The tale of a workaholic dad-turned-dog who finds that being man's best friend shows him the most important job - being a great dad.
Tim Allen
as Dave Douglas
Kristin Davis
as Rebecca Douglas
Danny Glover
as Ken Hollister
Spencer Breslin
as Josh Douglas
Robert Downey Jr.
as Dr. Kozak
Zena Grey
as Carly Douglas
Joshua Leonard
as Justin Forrester
Jane Curtin
as Judge Claire Whittaker
Annabelle Gurwitch
as Justin Forrester's Attorney
Jarrad Paul
as Larry
Bess Wohl
as Dr. Gwen Lichtman
Philip Baker Hall
as Lance Strictland
